🔬 Etch like a pro, without the mess! Achieve the perfect 1:4 powder-to-water ratio for optimal results. Compact bottle ensures easy storage without sacrificing quality. Enjoy a hassle-free etching process with no unpleasant smells. Delivers consistent performance for precise etching every time. Releases pure oxygen, making it a greener choice for your projects. 1:4 mix ratio 10 oz weight odorless formula This Printed Circuit Board Etchant is a 10 oz dry powder designed for efficient etching, featuring a precise 1:4 mix ratio with water, an odorless formula, and fine crystal texture, all while producing eco-friendly pure oxygen by-products.